?? ??????????????:??????
????:1????????????:??????
2?????????
3???3??400??????
4???????
5?????????
???12??????29?????????????????? ??????,29???????????,?,????
“????,????????????,???”????????????
?????????????????????????,???7C2216?????????????,?????????????????B737-800,??????????175??6??????????????????????????,???181?????,2??????,?????????????????
??,???? ???:?????